Psychological tests that yield relatively consistent results are said to be ________

According to Piaget's distinction between signs and symbols, a ___ is an example of a sign, and a ___ is an example of a symbol

a. pencil representing a telescope, stack of blocks representing a house b. thumbs-up gesture representing a job well done, pencil representing a telescope c. stack of blocks representing a house, numeral representing a given number of objects d. numeral representing a given number of objects, thumbs-up gesture representing a job well done

When a distribution shows a large majority of very low scores and a few

very high scores, the distribution is said to be a. skewed to the right b. skewed to the left c. skewed to the middle d. bimodal